Camplate Spring, for use on BSA models: B40, C15, B25, C25, B44 & B50. Triumph models: TR25W & TR25SSO.E.M: 40-3021 / 57-2691 / T2691.Camplate Spring, 40-3042 / 57-2691 / T2691. I50W. 26058.SKU: 40-3021 / 57-2691 / T2691£7.89PriceQuantity*Add to Cart